Bulletin d’avalanche

Jasper

Apr 19 – 20, 2014Parks Canada

Voir sur la carte

Archivé · expiré 12 years ago

Danger d’avalanche

Mon

Tue

Alpin

1 · Faible

Limite forestière

1 · Faible

Sous la limite

2 · Modéré

Ouvrir la carte complète

Points saillants

The avalanche hazard will rise on slopes with prolonged exposure to the sun. Plan to travel early to take advantage of the crust and be off big slopes by mid-day.

Problèmes avalancheux

Loose Wet
N
NE
E
SE
S
SW
W
NW
Alpin
Limite forestière
Sous la limite forestière
Probabilité
Possible
Taille
1–2
Little overnight recovery of the melt freeze crust is expected. Loose wet slides are possible by mid-day especially if exposed to intense solar radiation.
Deep Persistent Slabs
N
NE
E
SE
S
SW
W
NW
Alpin
Limite forestière
Sous la limite forestière
Probabilité
Unlikely - Possible
Taille
2–3
No recent activity on this layer however triggering may be possible from thin rocky areas on loaded features.

Weather Forecast

Cloudy conditions through Sunday with gusty SW winds and little precipitation expected. A cold overnight low on Sunday night will significantly recover the melt freeze crust from treeline to valley bottom. Sunny warm conditions on Monday and a significant rain event expected on Tue/Wed. The avalanche danger will rise accordingly.

Snowpack Summary

The crust that formed Fri. night was starting to break down on solar aspects below treeline by Sat. PM, elsewhere it stayed intact. Cloudy conditions overnight may prevent a strong crust from reforming. Generally the snowpack is; moist snow below the crust to TL, well bonded and warm mid-pack, and a weak faceted base. Cornices are large.

Avalanche Summary

No new avalanche observed today. Recent slab activity has been observed on SW aspects at treeline on the Feb 10th layer. loose dry out of steep SW rocky alpine features and loose wet on solar aspect at treeline and below.

Confidence

Timing or intensity of solar radiation is uncertain on Sunday

Régions couvertes

Jasper